Dodgers Cuban infield prospect Alex Guerrero required plastic surgery Tuesday after his left ear was bitten by Triple-A Albuquerque Isotopes teammate Miguel Olivo during a fight in the dugout. Dodgers general manager Ned Colletti confirmed the players that were involved, and a baseball source confirmed that Olivo bit Guerrero's ear in the culmination of a disagreement that a video showed began during a meeting on the mound.